Help-E320CDI engine prob

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muhandis89

Member
Joined
Aug 23, 2005
Messages
54
Location
Majorca
Car
E320CDi Estate
My E 320CDI Estate(first reg 2001)has done some 250,000 miles,without a major problem.Yesterday,quite suddenly it popped an injector,and I managed to get it recovered to my local(very good) garage in Morpeth.As the injector ejected,it took the securing bracket and bolt with it.The head is being taken off and helicoiled to see if the bolt position,in the ali head,can be recreated.I have to go to Germany later today(in another car-a Volvo!!) and should have news on Tuesday next.

I would appreciate any words of advice,on this,particularly if the ali head can be saved.While the injector looks OK,it will have to be tested.Has anyone else had this type of problem and did the solution work?
 
I know we're not talking about quite the same thing but here goes.

A few years ago, my old E-Type spat out a spark plug. It was in the middle of France and I was in deep $h1t. Araldite saved the day (yes, really) and it stayed in place like that for 3 years. Eventually I had the head (aluminium as well) fully reconditioned and the plug hole was helicoiled as part of the work.

There was no visible sign of the work - you could not even see where the insert was when you looked at this pot and the one next to it. The insert did not stand proud of the surrounding metalwork, etc.

I have never had a moment's concern from it since. Good as new.

So in summary - as long as your injector is fine, and the helicoil work is done properly, then you are going to be fine.
 
The head is being taken off and helicoiled to see if the bolt position,in the ali head,can be recreated.
I would appreciate any words of advice,on this,particularly if the ali head can be saved.

As long as they don't drill too deep there should be no problem. Does the head need to come off to do this.? Drill, tap, hellicoil..done.

What probably happened is the bolt came loose then the injector blew out once it came unstuck which then tore out he remaining threads in the aluminium head.

If the head does have to come off why not get all the threads hellicoiled so they are stronger than the originals.?
 
Gents.Thanks for the info.My friendly garage in Morpeth-R.S.Johnson have managed to helicoil the injector bolt hole,in situ.However the Merc parts people have taken 2 days to deliver seals,so car will not be ready until Monday.I hate to think what a new ali head would have cost?
 
.
German, Wurth, make these little repairing "things".
They works.

axnrb8.jpg
 
They are similar to a Helicoil.
The Wurth ones are solid inserts, the Heliciol is a stainless steel wire. Both are used in the same way.
 

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